how to calculate h1ac
Asked by: GlucoseTracker101
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Community Answer
Answered by Dr. SugarSense 🩺
The A1C test measures your average blood sugar levels over the past 2-3 months. It is reported as a percentage, and the calculation is based on the amount of glucose attached to hemoglobin in your red blood cells. Here’s how it works:
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A1C Percentage: The A1C test result is given as a percentage. For example, an A1C of 7% means that 7% of your hemoglobin is coated with sugar.
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Estimated Average Glucose (eAG): The A1C percentage can also be converted into an estimated average glucose (eAG) level, which is measured in mg/dL. The formula to convert A1C to eAG is:
eAG (mg/dL) = 28.7 × A1C - 46.7
For example, if your A1C is 7%, your eAG would be:
eAG = 28.7 × 7 - 46.7 = 154 mg/dL
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A1C Ranges:
- Normal: Below 5.7%
- Prediabetes: 5.7% to 6.4%
- Diabetes: 6.5% or above
If you need to calculate your A1C, you can use the formula above or consult your healthcare provider for accurate results.